Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef944d22c96032a3…

MALICIOUS

PDF

71.8 KB Created: 2021-09-08 08:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b0d11a0b4ac0ea80177b6f3c6b5edd55 SHA-1: 60fddee1fae59e2f68eec52eef279d9b2399bec9 SHA-256: ef944d22c96032a3c55bb3f5b0c4f4ef4b3de1575d945c4e9b7ef89970bef956
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, indicating an attempt to execute malicious code upon opening. The document also functions as a link farm, directing users to numerous external URLs hosted on compromised or disposable domains. These URLs likely serve as landing pages for phishing attempts or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://oniceh.ru/uplcv?utm_term=svantek+supervisor+manual PDF link annotation
    • https://esprimagroup.com/userfiles/file/wazivudiwuwekan.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b3917490540---50184515675.pdfIn PDF document text
    • http://fitsiluet.cz/data/file/63968404949.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/78c296db7405c6c1fff8fa669b6bfa15/wekarapaxodow.pdfIn PDF document text
    • http://orem.mn/uploads/files/70757838101.pdfIn PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/rofenabotiv.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/lp0nu3kkrebqc1pms45lmf4p4v/regumo.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d93b75de29---89693468025.pdfIn PDF document text
    • http://srsheicha.com/uploadfile/file/7190443730.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160f744764ba39---didoroxobexusirag.pdfIn PDF document text
    • http://skiflogistics.ru/userfiles/file/34042128445.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/5fb6386b55040e1e5f2e8cf40a79f285/81675721100.pdfIn PDF document text
    • http://thebeautyofdesign.nl/ckfinder/userfiles/files/xexupir.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/035f924cb6d737a62166bb607fb4f8fb/19357505720.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b3a6a579c8---vibesemadose.pdfIn PDF document text
    • https://nic-irq.com/userfiles/files/toluwogonosusapenig.pdfIn PDF document text
    • http://ekogamma.pl/javascript/ckfinder/userfiles/files/92226764454.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/kiredazosatuwivoluxu.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/a85a8bc5574c5a01aa457dbd1a57747c/takixu.pdfIn PDF document text
    • http://sostrevalli.it/userfiles/files/46576903295.pdfIn PDF document text
    • http://webursitet.org/Files/file/kamenarolojosamufomajibal.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/34618071306.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773455d1d2e---kizusa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E5 15784 bytes
SHA-256: 0c710092759dd96172793d2d1e2862212244dbcbaa733549858a5df7b32a04cb
font_01_sfnt_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 10744 bytes
SHA-256: d3b28c3015f2c94cdbe4ea7d4f4dfd912abbd2db4f7afae552a64c72367b4153
font_02_sfnt_off0000f978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF978 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.